Plugging tool



Patented July 22, 1930 UNITED STA I '(HENRI LENTULO, or PARIS, enema I rnneeme root.

' Applicaticn filed February 16, 1925, Serial No'. 254,787, and in France reams 2 5,192 7;

The present invention relates to tools 01' instruments for the plugging or tamping of pastes, cements or other stopping material 2 into dental hollows I and other narrowmouthed cavities of all kinds. a r

It is particularly applicable to the plugging or tamping of antiseptic pastes into the root channels of teeth,- void of their organic content, in Order to produce the complete filling of the cavity. Y

This operation is carried out by the introduction of the tool or instrument into the interior of the channel or of the space to be filled, the plugging tool being covered with pasty or semi-liquid material which as aresult/of a rapid rotary movement imparted to the instrument is driven, pushed, and projected into theempty spaces, which are thus filled'up t r v a The invention consists in a rotarypaste pluggingior tamping device forthe introduction of plastic substances into "narrowmouthed cavities ofal'l kinds, in particular intothe dental cavities, the tool or instru-. ment being constitutedby a wire of suitable dimensions,-wound into a helix and mounted V 'ging tool, themetal 'wlre f IS COIIIIGCtGCl to a upon the extremity of ashank or mandrel allowing of imparting to ita rapid rotarymovement. gThe plugging tool is preferably constructed with the actual tampi'ng' device in 'the form of'a metal-wire of round or angular cross section, wound in ahelix ofuniform or variable pitch around an imaginary or a concrete core wholly or in part,this core having the shape of a'cone, rat-tailor other.

The invention also comprises means, for connecting the helically coiled wirewith the shank or mandrel whichserves as its support,

and rendering. these parts solid or'integral with one'another. p a r i Upon the accompanying drawings, to

which reference will be made in the subse-' quent description, Figures 1 andfi represent on an enlarged scale a plugging toolc'on structed in accordance with the invention; Figures 2, 3 and 4, likewise represent on -,the same enlarged scale, variousmcdes of ging tool to. its support,

attachmentof the wire terminatingthe plug slightly greater'than twice the wire This wire f is wound in a helix F, of mi form or varying pitch as required, around animaglnary core fora-length which may v'ary'for example from 1 centimetre upwards,

according to the length or depth of the chain nel or space to be filled with the paste The diameter of the core around which the wire f is wound may also be varied as desired; "itwill have for example a diameter the diameter em ployed'for the wiref. p

This same imaginary core'is not necessarily orconstantly cylindrical; it may assume various shapes, for example a drawn-out'conical shape, like a rat-tail, the widest part corresponding to thebase of the instrument.

At the base of: the working part of the plugshank or mandrel M,"int'ended to transmit from a dental engine or other motor.

may be carried ners;

Figures 2, 3 and 4 of the drawingrepresent by way of example three modes out in widely :varying man- 7 upon its supporting shank or m'andrel M.

, Figure 2 shows a method of attachmentin the shape of a figure 8. I Towards the endwhere the shank M is to receive. the .wire f'there are provided two grooves 3 and 4 on opposite sides; 'At the bottom-of the grooves 3 and 4, twoholes 5- and 6 are drilled at a certain distance apart, through which there passes oneend of the metal wire 7'. a

"-Th'is'wire-extends down theupper part of the groove 4, is threaded into the upper hole .6, and upon leaving thelatter enters the low- I "er-part of the groove3'; afterpassingdo'wn' The fixing of the'wire f upon ithe shank M i this groove, towards the lower hole 5, which it passes through, it encounters the opposite groove 4, rises again along the lower part of the latter, re-enters the first hole 6 and is again engaged therein from the same side as at the start; on leaving, it rises and extends along the upper part of the groove 3 which reaches to the top of the shank; it then again encounters the other extremity 7, turned up stiiily and straight in prolongation of the top of the shank, and is coiled in a helix f first around a small portion of this wire f which forms a prolongation of the end of the shank, then extends beyond it and is wound around the imaginary core as has been stated previously, so as to form the more active working portion of the plugging tool.

As shown in Figure 6, the extremity f of the wire 7 may be of greater or less length and may constitute the whole or a part of the core, which in this case is no longer an imaginary core as contemplated above but an actual concrete core, extending for the whole length of the helix f or for only a part of that length.

Naturally the helically wound wire may be in contact wholly or in part with the concrete core, or again it will be permissible to provide a certain clearance between these elements.

In the example of Figure 3, the basal extremity of the helicoidal wire f may be. screwed directly into the end of the shank or mandrel M, or may be maintained in the upper extremity of the said shank or mandrel by clamping, adhesion, wedging, etc.

In the example of Figure 4, the instrument is constructed in a single piece, the helicoidal wire 7 being constituted by the drawing out of the end of the shank M.

Naturally all suitable materials may be utilized for the manufacture either of the wire f or the shank or mandrel M.

As above stated, the drawings show the instrument on an enlarged scale and the wire 7' is of a diameter equal to only some hundredths of a millimetre. The paste or plastic stopping material which is supplied to the helix or coil f is preferably of the consistency of Vaseline. This paste is fed forward by the rotating'coil f on the principle of the inclined plane or helix until such paste has reached the end of the wire f which has been pushed to the end or bottom of the canal. Owing to the thinness of thewire and of the coil 7, the device can easily follow the path or bore of a non-rectilinear canal in the root of the to'oth, and the construction and flexibility of the device will allow air to escape from the canal. I

What I claim is 7 1.'A dental. plugging tool, consisting of a rotatable device, said device including a wire coiled around the rotary axis of the device adjacent to the working point of the tool and adapted to enter at least partly into the cavity to be plugged.

2. A dental plugging tool, comprising a support member and a coiled wire member adapted to receive plugging material, said members being fixed together and rotatable about a common ax1s, sa1d coiled wire member when rotated acting to propel plugging material into the cavlty to be plugged.

3. A rotary dental plugging tool, comprisat least partly into the cavity to be plugged. F

4. A rotary dental plugging tool, comprising a shank and a flexible point section, said point section including a helical coil of very fine wire and being secured to said shank with its helical axis in prolongation of the axis of said shank.

5. A rotary plugging tool, comprising a shank, said shank being apertured transversely of its axis, and a point section, said point section including a coil of wire, one

end of said coil being secured to said shank by passing through sald apertured shank, said 0011 being coaxial with said shank.

6. A rotary plugging tool, comprising a shank, said shank having'apertures transverse to its axis, and a point section, said point section including a tapering helical coil of wire, the larger end of said coil being secured to said shank by passing the wire through said apertures, and the extremity of said wire being disposed in the common axis of said coil and said shank.

7 Arota'ry plugging tool, comprising a shank, said shank having longitudinal grooves on opposite sides adjacent to one end I thereofand having transverse apertures extending between said grooves, and a polnt section, said point section including a tapering helical coil of wire, the larger end of said coil being secured to said shank by passing the wire along said grooves and through said apertures, and the extremity of said wire being disposed in the common axis of said coil and said shank.

8. A rotary plugging tool, comprising a shank and a point section, said point section including a coil of wire wound about a core surface having its axis in prolongation of the axis of said shank.

9. A rotary plugging tool, comprising a .11;

shank and a point section, said point section including a hehcal coil of wire, said helical c011 forming an envelope to a core of diameter not less than that of the wire composing 'said coil. 7

10. In a dental instrument, the combination with a point section of fine wire, of a paste-propelling coil member also of fine Wire and integral with said point section, said point section and coil member being 4 adapted to enter into a tooth canal, means for imparting rotary movement to said propelling coil and point section, and means for holding and controlling said point section and coil member during their rotary movement. 7

11. As a new dental instrument, a point section, .a supporting member integral with said point section, said supporting member including a helical coil acting onthe inclined plane prlnciple, said oint section and supporting member both ing of very fine wire adapted to enter a dental canal, and means for rotating said point section'and supporting member while at least a portion of said coil is within the dental canal.

12. A dental tool for feeding forward pasty stopping materials, comprising a flexible point section adapted to be inserted to the end of a root canal,"a member integral with said point section and acting as a support therefor, said supporting member including a helical coil adapted to act on the inclined plane principle, said point section and coil being of fine wire, flexible and insertible into the root canal, and means for imparting rotary movement to said coil and point section whereby the coil will cooperate o with the walls of the canal to the pasty materials. a

In testimony whereof I hereunto aflix my signature.

HENRI LENTULO.

feed forward 

